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中文摘要：
通过喷雾干燥和高温热解法，成功制备了不同有机碳源包覆的硅碳核壳复合负极材料。用X射线衍射（XRD）和扫描电镜（SEM）表征了材料的组成和形貌；用恒电流充放电（CC）、循环伏安（CV）和交流阻抗（EIS）表征了硅碳核壳复合材料的电化学性能，测试结果表明柠檬酸、酚醛树脂和葡萄糖作为有机碳源包覆硅碳复合材料的电化学性能相对于传统石墨材料都有明显改善，而葡萄糖为有机碳源制备的硅碳核壳复合材料具有最高的首次效率和容量保持率。
英文摘要：
Silicon/graphite with core-shell structure composites were successfully synthetized by spray drying in combination with a following heat-treatment process. Structure and morphology of the composites were charac- terized by XRD/SEM measurements. Investigated by charge-discharge test （CC）, cyclic voltammetry （CV） and electrochemical impedance （EIS）, the core-shell silicon/graphite composites coated by citric acid, phenolic resin and glucose have better electrochemical performance than that of the conventional graphite. And with the high initial Coulombic efficiency and high capacity retention rate, the silicon/graphite composite coated by glucose has the best electrochemical performance.
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